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Gravel Gertie
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English
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Etymology
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From a character in the
Dick Tracy
comic strip.
Noun
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Gravel
Gertie
(
plural
Gravel Gerties
)
A chamber, with a roof covered by a deep pile of gravel, within which
nuclear
warheads
may be maintained; in the event of a (non-nuclear) explosion, the roof is weakened and the gravel falls and prevents the escape of nuclear material
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